Paper bag



(Model') 1'). APPBL.

Paper Bag. N No. 234,s4on I Patented Nov. 23,1880.

N4 PETERS. PHOTD-LITHOGRAPHER, WASHINGTON. D C.

NHE STATES ATENT intent DANIEL APPEL, OF CLEVELAND, OHIO.

PAPER BAG.

SPECIFICATION forming part of Letters Patent No. 234,840, dated November 23, 1880'.

Application filed April 2, 1880.

To all whom it may concern Be it known that I, DANIEL APPEL, of Cleveland, county of Ouyahoga, State of Ohio, have invented an Improvement in the Mannfacture of Paper Bags, of which the following description, in connection with the accompanying drawings, is a specification.

My invention relates to improvements in the art or method of making paper or other bags from a web of material taken from a roll 5 and it consists in, first, gradually folding the said web longitudinally at three places, the said folds being parallel, the center fold, however, being made more or less at one side of the center of the web, according to the distance it is desired one edge of the paper to overlap the other at the longitudinal seam of the bag; second, severing the said. folded web; third, partially separating its outer plications from its central part sufficiently far to permit the leading end of the web, folded as described, to be acted upon at each side the longitudinal central fold, or between it and the edges of the web, so that portions of the said leading end of the web may be wiped inward and backward with relation to the direction of movement of the said web, thus laying a portion of the web each side its central fold in suitable position to form part of the diamond fold;

fourth, lapping the pasted edges of the web to form a tube, by, preferably, gradually opening the said folded web along its central fold, so that the free edges of the web (one of them previously pasted in any usual way) will lap one over the other, thus forming a tube with a two-ply wedge-shaped leading end fifth, laying or turning back upon the said tube one of the said wedge-shaped leading ends, which completes the diamond fold. After this the final or cross folds to form the satchel-bottom for the bag may be made in any usual way.

Figure l of the drawings represents, in crosssection, the folding-guides, the line of section being taken at such a point as to illustrate the plications of the web, as I shall call them,

'broughtqnite near the center fold, the heavy black lines representing the paper. Fig. 2 represents a side view of the leading end of the folded web as it will appear before the third step or operation in this my method or process (Model) and 3. In Fig. 4c the two lines at the right represent folded or doubled edges and the two at the left single edges; Fig. 5, a top or edge view of the leading end of the web as it will appear after each corner has been wiped in or back, as just described of one corner in Fig. 3, the web being in the condition in which it will appear before the web is unfolded along its longitudinal central fold, (designated by the line a (0,) to form the tube, the parts being shown as separated a little to avoid confusion; Fig. 6, a cross-section of the web of paper as it will appear after it has been unfolded along its center fold from the position Fig. 5, the edges of the web being lapped and united by paste to form a tube. Figs. 7 and 7 are edge and top views of the tube shown in Fig. 6. Fig. 8 is annpper-side view of the tube, with one of the wedge-shaped plies atits leadingend, as shown in Fig. 7 turned back to complete the diamond fold. Fig. 9 represents the said diamond fold as having had one final fold, Fig. 10 as having had two final folds,'to complete the bagbottom. Fig. 11 is a side elevation of the front end of the innermost folding-guide, to represent its wing; Fig. 12, a top View thereof as it will appear before the folded web is cut off, the wings being closed, the dotted lines in said figure representing the wings in open position, as will be the case as soon as the web is cut off; Fig. 13, a diagram illustrating the wipers to wipe inward portions of the leading end of the folded web; Fig. 14, a diagram of a piece of the web of paper, showing by the dotted lines a b 0 its longitudinal folds, and by the dotted lines (I the direction of the folds formed by wiping inward portions of the leading end of the web after having been folded into W shape.

per bags, the web of paper, on a suitable roll (not shown) will be led, fed, or drawn by suitable feed-rollers over or between metal or other folding guides or surfaces shaped to cause the said web to be folded gradually along the lines a I) 0, (see Fig. 14,) until the web is brought substantially into the condition or shape represented by the heavy lines between the outer folder-guide surfaces, 2 3 4L 5, and inner surfaces, 6 7 S 9, the paper assumin g substantially the shape of the letter W, the outer plication, 10, of the folded web outside the longitudinal fold 0 being longer than the corresponding plication 12 outside the fold b, so as to permit one edge of the said web, when its edges are brought together, as in Fig. 6, to overlap the other edge, as is necessary to produce the pasted longitudinal scam in the tube.

It will be observed in Fig. 14 that the line a. of central fold is at one side of the center of the web, to thus insure the formation of one plication wider than the other, to enable one plication, pasted in any usual way, to overlap the other, as described, when the edges 13 14 are brought together to thus form the tube, as hereinafter set forth. The front of the inner folding-guide will be cut away, leaving its ends beveled or inclined, as at 15, Fig. 11, and the front ends of the outer folder-guides 2 5 will be cut square, and terminate at and rest in the position indicated by the dotted line 00 or in the said figure. The front end of each guidesurface 6 and 9, preferably of spring metal, is so shaped or bent outward as to form in advance of the dotted line :20 :0, Fig. 11, folder-wings, the normal tendency of which will be to slightly separate themselves from the portions 7 8 of the said inner guide as soon as the web is severed transversely just ahead of the front end of the said folder-guide surfaces, the said wings being again closed or moved toward each other as soon thereafter as the free end of the web passes a few inches beyond the front end of the said folder-guide surfaces.

The web having been folded longitudinally and brought close together into four thicknesses or plications, is severed, as described, after which, by the folder-guide wings, the web plications 10 12 are opened or separated from the web plications 18 19, (see Fig. 4,) constitutin g the central part of the web, far enough to permit the wiper-arms 20 21, supposed to be carried on a semi-rotating or oscillating shaft, to strike the leading end or corner 22 of the web (see Fig. 13) and wipe it inward or backward, leaving said corner in the condition represented by the dotted lines at the right of the inclined end 15 of the wing 9, and, as in Figs. 3 and 5, thus forming the diagonal folds which enter into the composition of the diamond fold; The leading end of the paper, folded as described, and pushed back opposite the lines I) b 0 c, as indicated by dotted lines,

Fig. 14, is then unfolded along only its central fold, a, such unfolding thereof leaving the web in regular tube form with edges lapped, (see Fig. 6,) and viewing the leading end of the said tube at its edge, it will be seen, as in Figs. 6 and 7, that there are formed two wedge-shaped leading ends, 25 and 26. In this condition one of the said endssay, for instance, end 25 is turned backward over upon the body of the tube into the position shown in Fig. 8, completing the well-known diamond fold.

It will be obvious, instead of unfolding the web along its central fold, a, as described, that I may turn the pasted edge 13 of the wider wing 10 overupon the narrower wing 12 while the web is yet in its W form, after which the tube thus made may be unfolded and then turned back, as before described, to form a tube, as in Fig. 6. The diamond fold having been formed may then be operated upon by cross-folding it in any usual way, as herein shown, on the lines 27 2S, completing the satchel or square bottom bag. The portions of the end of the bag wiped back, as described, before thetube is pasted together, serve as the side corners of the diamond fold after the leading end 25 is turned back, as in Fig. 8.

The dotted lines in Fig. 7 indicate within them, or bet-ween them and the diagonal edges of the bag, the portions which were so wiped inward, as described by the wipers.

In practice I shall make bags after my method by automatic machinery, for which I am about to apply for Letters Patent of the United States, and it will therefore be understood that I do not here claim any mechanism whatever for carrying out my method or process, as that will be hereinafter claimed in another application.

I claim- 1. That improvement in the art or method of making the diamond fold in paper bags which consists in folding a web longitudinally at at least three points to approximate the letter W, severing the said folded web transversely, wiping or turning inward and backward portions of the leading end of the said folded web between its central fold and side edges, overlapping and joining the edges of the said web, and opening out the said web or tube along its central fold, and turning back one of the leading ends or corners of the tube, completing the diamond fold, substantially as described.

2. In the manufacture of satchel-bottom paper bags, that improvement in the method of producing the tube which consists in folding the web of paper longitudinally at one side of its center, and at two other places equidistant therefrom and parallel thereto, leaving va web with three parallel folds, which place the material in four plications, one of the outer of said plications being wider than the other, and subsequently lapping and pasting the edge of the wider plication over upon the edge of the narrower plication, substantially as described. 7

3. That improvement in the art or method 5 of forming the diagonal folds to make part of the diamond fold of a satchelbottom bag, which consists in folding a web longitudinally at three places in parallel lines, and wiping inward and backward the leading corners 22 10 thereof at the folds b c, to make the diagonal folds, which, when the web is joined at its edges into a tube, assist in the formation of the diamond fold, substantially as described.

In testimony whereof I have signed my name to this specification in the two subscribing witnesses.

DANIEL APPEL. Witnesses:

G. W. GREGORY, N. E. O. WHITNEY.

presence of 5 

